Electric-light mounting.



PATENTED SEPT. 29, 1903.

S. H. ANDERSON. ELECTRIC LIGHT MOUNTING. Afrmouion rum FEB. 12, 1902.

N0 MODEL.

V 9 W m wz wvmw 1. J w my I /l/l/fl/ll/l/l/l v. mJ

QPMZFW UNITED STATES latented September 29, 1903.

PATENT OFFIC ELECTRIC-L1G HT Mou'NTme.

SPECIFICATION forming part of Letters Patent 116,739,973, datedSeptember 29., 1903. Application 516.1 February 12,1902. Serial No.95.791. (No model.)

To all whom it may concern.-

Be it known that I, SAMUEL H. ANDERSON, a citizen of the United States,residing at Los Angeles, in the county of Los Angeles and State ofCalifornia,'have invented a new and useful Electric-Light Mounting, ofwhich the following is a specification.

An object of this invention is to provide for electric-arc lamps amounting adapted for use in railway and tram cars and other conveyances,as well as elsewhere, which can be quickly and readily attached to anddetached from its support without the use of screws and withoutconnecting or disconnecting any wires and also without turning orlowering the lamp after it is brought into contact, thus insuringperfect alinement and firm retention of the lamp in position.

Another object of the invention is to provide spring-controlled devicesfor holding the lamp in position independent of the springcontrolledcontact device, so that the strain of holding the lamp in position isnot brought on the electrical contact devices.

A further object is'to make provision for readily mounting, trimming,and repairing electric-arc lamps.

In carrying out this invention in its preferred form means are providedwhereby the globe will be firmly held in position and will be allowedlateral play for the purpose of alining the same with the upper carbon,and

provision is also made for readily attaching and detaching the holderfor the lower carbon and globe with and from the frame which carries theupper carbon, all of the detachable portions being positively heldtogether.

-In order that an arc-lamp may be satisfactorily employed for lightingrailway or tram cars or other vehicles, it is desirable that the.

same shall be positively and rigidly connected with an overhead support,that the globe shall be firmly supported by the frame, so

that there will be no looseness or rattling of position. All of theseconditions are pro vided for in this invention by means ofspringcontrolled connections and contacts throughout, said connectionsbeing constructed to allow ready attaching and detaching of the partsfor the purpose stated.

This novel lamp-mounting is not limited to use in ears and othervehicles, but is especially adapted for the same owing to the reasonsstated.

This invention may be embodied in various forms, and in the accompanyingdrawings I have illustrated the form which I deem preferable forcarrying out the principle thereof.

Figure I is an axial section on line I I, Figs. II, III, and IV, showingthis invention furnished with a lamp and fastened to a ceiling or otheroverhead support. The magnet-winding of the lamp is shownbroken, and thecarbons are shown intact. Fig. II is an axial section on line II II,Figs. I, III, and IV. Fig.

III is a plan of the mounting detached. Line III III, Figs. I and II,indicates the plane of this view. Fig. IV is a View looking up fromline-IV IV, Figs. I and II. Fig. V is'a plan section on line V V, Figs.I and II. Fig. VI is a detail of the preferred form of springcontrolledmeans for making the forcible connection between the supporting portionand the detachablelamp-mechanism-carryingpor- .tion or frame.

aportion being broken away to expose the spring-band. Fig. XIis afragmental elevation further illustrating the globe-holder.

1 designates a supporting portion constructed to be fastened by screwsfzor other suitable means to the ceiling or other overhead or elevatedsupport 3.

4 designates in a general way a detachable frame portion constructedwith a detachable lower-carbon holder, which is designated in a generalway by the character 5.

G designates in a general way spring-controlled attachments fordetachably connecting the said portions 1 and 4 together.

7 designates in a general way spring-controlled attachments fordetachably connecting the lower-carbon holder with the main body 8 ofthe detachable portion 4.

51 designates a globe-holder carried cross-bar t of the frame.

0 designates a globeretainer furnished with an inward projection 10 anddetachably connected with the globe-holder 51 by suitable means, asindicated bythe pins 52in the bent slots 91. The globe 11 is furnishedwith a neck 12, enlarged at its lower end, and a spring-band 13encircles the neck above the enlargement and is engaged by theprojection 10 of the retainer and is thereby pressed against thedownwardly-expanding portion of the globe-neck when the retainer 9 isfastened in place on said globe-holder 51. The lower wall of the slot J1is furnished with a notch 92 at its inner end to seat the pin 52 whenthe retainer 9 is turned into position for that purpose. The spring 13lifts the retainer 5) thereby to bring the notch to the pin-seatingposition.

Preferably the spring-band 13 is a coil of wire, the ends of which arefastened together by suitable means, as indicated by the hooks 1-1 inFig. X, and is of less diameter than the chamber of the retainer 9, sothat it can be adjusted laterally therein. The neck of the globe playslaterally in the retainer.

15 designates in a general way the springcontrolled contact device whichis carried by the supporting portion 1. One of these devices isconnected with the positive and the other with the negative side of theline connection It. Said contacts may comprise a socket a, fastened byscrews 1) or other suitable means to the supporting portion 1 andfurnished with an internal shoulder c, a follower d, furnished with astem 6, smaller than the main body of the follower and wholly chamberedwithin the socket a, a spring f, around the stem 6, inside the socketbetween the main body of the follower and the shoulder c, and a screw g,screwed into the inner end of the stem to engage the shoulder o. By thisconstruction the device is easily asby the 'sembled, and thecontact-follower d plays freely back and forth in the socket a and isnormally held pressed out by the spring f, which will yield to pressurewhen the follower (Z comes into contact with the contact point, plate,or terminal 7t of the detachable frame portion 4:, which carries thelamp mechanism.

1 designates insulation between the contact plates or terminals 71 andthe frame portion a of the mounting.

j+ andj designate the electrical connections between the terminals h+and 71.- and the positive and negative carbons, respectively.

711+ and 7tdesignate the two terminals of the line connection with whichthe upper porcatch member operated by a spring 12, which 7 is carried bya socket 0 in the supporting portion 1.

p designates a slot in the lamp-frame portion 4, throughwhich the head qof the catch may pass. 0' designates a notch in-said por tion 4, intowhich the head may catch after the same has passed through the slot andbeen turned part way around.

To attach the lamp to the supporting portion 1, the attendant will bringthe portion 4 into position below the portion 1 and will then push theportion 4 up into place, with the heads (1 of the catch members passedthrough the slots; Then he will grasp the heads (1 and draw themdownward through the slots against the pressure of the springs '21 andwill then rotate them quarterway around to bring them. into the notchesr and will then release the heads, thus allowing the spring at to forcethe portion 4 against the portion 1. In the operation just described thecontact-plate It will press the contact-follower (l up against the forceof the springs f, thus producing and maintaining a firm contact for theelectrical connections.

The construction and operation of the detachable connecting devices 7are substantially the same as just described. In the drawings the partsof the device 7 which correspond to those just described are designatedby similar reference characters and an indice, the notch 0" being formedin the bar of the lower-carbon and globe holder.

The socket 0, in which the shouldered catch members m and their springsn are carried, is a tubular portion of the frame 8 and is furnished witha cap 8, which supports the spring and forms the end of the frame membera. The head q of the attachment supports the bar 25. An attachment isprovided for each of the ends of said bar on the opposite sides of theframe.

a designates the cover for the globe.

To place the globe in position, the retainerwill be first put upon theneck 12, and then the spring-band 13 will be forced upon the neck insidethe retainer. Then the globe will be brought into position on the globeholder or base 51-, and the retainer will be pressed down, thus forcingthe spring-band down on the outwardly-sloping lower end of the neck. Theretainer will then be turned to bring the notches 92 below the pins 52and will then be released, whereupon the spring 13 contracts, slidingupward toward the narrow portion of the neck, and thereby lifts theretainer carbon holder, and the operation is reversed to release thesame. 7

WVhat I claim, and desire to secure by Letters Patent of the UnitedStates, is-

1. Alamp-mountinghavingdetachableportions, spring-controlled attachmentsfor holding said portions together, and spring-controlled electricalcontacts independent of the I said spring-controlled attachments.

2. A lamp-mounting having detachable por- I tions and spring-controlledattachments for holding said portions together, said attachmentscomprising members movable independently of the lamp-mounting so as notto depend on rotation of the latter for fastening or unfastening.

3. A lamp-mounting comprising asupporting portion, a frame portion andspring-controlled means for detachably fastening said portions together,said attachments comprising members movable independently of the saidframe portion so as not to depend on rotation of the latter forfastening or unfastenng.

-l. A lamp-mounting comprising a support ing portion and a frameportion, one of which portions is furnished with'a slot; a shoulderedmember pivotally connected with the other portion and constructed to beoperated by hand and to pass through said slot and to engage the slottedportion when partially rotated; and a spring for actuating said memberto effect such engagement.

5. A lamp-mounting comprising a supporting portion; a shouldered membercarried thereby and mounted to turn and to move axially; a lamp-frameconstructed to receive the shouldered member and to be engaged thereby;and a spring to operate the shouldered member to effect such engagement.

6. In a lamp-mounting, the combination of a supporting member furnishedwith electrical terminals; a lamp member furnished with correspondingterminals; and attaching means independent of the electrical terminalsconstructed to I force the two members together with the said terminalsin appropriate contact. I V

'7. In a lamp-mounting, the combination of a supporting member furnishedwith electrical terminals; a lamp member furnished with correspondingterminals; and springcontrolled attaching means independent of theelectrical terminals constructed to force the two members together withthe said terminals in appropriate contact.

8. In a lamp-mounting, the combination of two portions constructed to beconnected together, one of said portions being furnished with a slot anda seat for an engaging device; and the other portion to be attachedthereto being furnished with a spring controlled shouldered devicemovable independently of the lamp-mounting portion on which it ismounted constructed to pass through the slot nished with electricalcontacts to press uponsaid spring-controlled contacts; andspringcontrolled means independent of the electrical contacts forfastening said frame to said support.

11. A lamp-mounting comprising a supporting .portion;a detachableportion constructed to carry the lamp mechanism; means operatingindependently of the rotation of the lamp mechanism for detachablyholding portion and furnished at its upper end with an inwardprojection; a globe furnished at its lower end with a neck inserted insaid globe-holder and enlarged at its lower end; and a spring-bandaround the neck above its enlarged lower end engaging said shoulder tofirmly hold the globe in its seat.

12. A lamp-mounting comprising a supporting portion; a detachableportion conaround the neck above the enlargement andengaging said globe.I 7

13. In a lampmounting, the combination projection to firmly hold the ofa base; a globe having a neck enlarged at .its lower end; a spring-bandaround said neck; and a retainer surrounding the neck and detachablyconnected with the base and furnished with an inward projection to pressthe spring-band down onto the downwardlyenlarged neck while allowinglateral movement of the spring and globe.

14. In a lamp-mounting, the combination of a base furnished with anupward projection a globe having a downwardly-enlarged said portionsrigidly together; a globe-holder detachably connected with saiddetachable ICC neck; aspring-band around said neck; aretwo subscribingWitnesses, at Los Angeles, tainer surrounding the neck and engagingCalifornia, this 4th day of February, 1902.

the top of the sprin" and allowin lateral play v 1 0f the same; andnieans for fastening the re- SAMUEL ANDERSON 5 tainer on the base.\Vitnesses: I

In testimony whereof I have signed my JAMES R. TOWNSEND, name to thisspecification, in the presence of E. A. \VATERMAN.

